Rachel Bilson on Chuck

TV Tonight: Chuck

TV Tonight: Chuck I've been enjoying my weekly Chuck fix well enough so far this season, but things might get a whole lot better tonight, when Rachel Bilson joins the cast. Bilson's playing Lou, a potential love interest for Chuck (and barrier to any sort of legit Chuck-Sarah romance, presumably). From this first clip of Lou meeting Chuck when she brings her cell phone into the Buy More for a repair, she looks to be just as lovably neurotic as I'd hoped.